Seagate ST11200N Product Manual page 70

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Table 11.6.3-1c. Single ended 80 pin cable pin assignments (Non-shielded connector)
Signal
+12 V
+12 V
+12 V
+12 V
NC
NC
NC
NC
NC
NC
-IO
-REQ
-CO
-SEL
-MSG
-RST
-ACK
-BSY
-ATN
-DBP
-DB7
-DB6
-DB5
-DB4
-DB3
-DB2
-DB1
-DB0
NC
NC
NC
NC
NC
+5 V
+5 V
+5 V
SYNC
MTRON [3]
SCSIA0 [5]
SCSIA2 [5]
Notes.
Signals [1] thru [5] are used in place of installing jumpers and cables on option select connectors J2, J5 and
J6. See also notes following Figure 10.1-1.
[1] Synchronous spindle synchronizing signal, generated by either host or drive.
[2] Front panel LED signal; indicates drive activity for host front panel hard drive activity indicator.
[3] Asserted by host to enable Motor Start option (starts motor via SCSI bus command).
[4] Asserted by host to enable Delayed Motor Starrt option (motor starts at power on or after a delay of 12
seconds times drive ID). This and [3] above are mutually exclusive options.
[5] Binnary code on A3, A2, A1 and A0 asserted by host to set-up SCSI bus ID in drive.
Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D
Pin number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
[1] 37
38
39
40
Signal Pin number
Ground 41
Ground 42
Ground 43
Ground 44
NC 45
NC 46
Ground 47
Ground 48
Ground 49
Ground 50
Ground 51
Ground 52
Ground 53
Ground 54
Ground 55
Ground 56
Ground 57
Ground 58
Ground 59
Ground 60
Ground 61
Ground 62
Ground 63
Ground 64
Ground 65
Ground 66
Ground 67
Ground 68
Ground 69
Ground 70
Ground 71
Ground 72
Ground 73
Ground 74
Ground 75
Ground 76
LEDC [2] 77
DLYDST [4] 78
SCSIA1 [5] 79
SCSIA3 [5] 80